document.getElementById("div_canshu").innerHTML="<div style='font-weight:bold; font-size:13px;'>规格选型<\/div><div style='width:700px;overflow-x:scroll;'><table><tr style='white-space:nowrap;'><td>产品范围<\/td><td>方向性<\/td><td>工作速度最高<\/td><td>厚度<\/td><td>孔尺寸<\/td><td>连接器类型<\/td><td>灵敏度<\/td><td>磨料颜色<\/td><td>频率响应最大值<\/td><td>频率响应最小值<\/td><td>输出阻抗<\/td><td>引线长度<\/td><td>圆盘直径<\/td><\/tr><tr><td><select name='PV' id='SG2PV240' multiple><option value='240_5511'>-(7)<\/option><\/select><br \/><span onclick='clearsel(\"SG2PV240\");' style='cursor:pointer; color:#F00;white-space:nowrap;'>重新选择<\/span><\/td><td><select name='PV' id='SG2PV617' multiple><option value='617_42539'>Cardioid(1)<\/option><option value='617_72434'>Omni(4)<\/option><option value='617_78855'>Unidirectional(1)<\/option><\/select><br \/><span onclick='clearsel(\"SG2PV617\");' style='cursor:pointer; color:#F00;white-space:nowrap;'>重新选择<\/span><\/td><td><select name='PV' id='SG2PV709' multiple><option value='709_5511'>-(1)<\/option><\/select><br \/><span onclick='clearsel(\"SG2PV709\");' style='cursor:pointer; color:#F00;white-space:nowrap;'>重新选择<\/span><\/td><td><select name='PV' id='SG2PV794' multiple><option value='794_5511'>-(1)<\/option><\/select><br \/><span onclick='clearsel(\"SG2PV794\");' style='cursor:pointer; color:#F00;white-space:nowrap;'>重新选择<\/span><\/td><td><select name='PV' id='SG2PV1022' multiple><option value='1022_5511'>-(1)<\/option><\/select><br \/><span onclick='clearsel(\"SG2PV1022\");' style='cursor:pointer; color:#F00;white-space:nowrap;'>重新选择<\/span><\/td><td><select name='PV' id='SG2PV1066' multiple><option value='1066_5511'>-(6)<\/option><\/select><br \/><span onclick='clearsel(\"SG2PV1066\");' style='cursor:pointer; color:#F00;white-space:nowrap;'>重新选择<\/span><\/td><td><select name='PV' id='SG2PV1075' multiple><option value='1075_5511'>-(2)<\/option><option value='1075_13592'>-3 dBV/Pa(1)<\/option><option value='1075_14516'>-33 dB(1)<\/option><option value='1075_24894'>-57dBV/pa(1)<\/option><option value='1075_35621'>-64dBV/Pa(1)<\/option><\/select><br \/><span onclick='clearsel(\"SG2PV1075\");' style='cursor:pointer; color:#F00;white-space:nowrap;'>重新选择<\/span><\/td><td><select name='PV' id='SG2PV1192' multiple><option value='1192_5511'>-(1)<\/option><\/select><br \/><span onclick='clearsel(\"SG2PV1192\");' style='cursor:pointer; color:#F00;white-space:nowrap;'>重新选择<\/span><\/td><td><select name='PV' id='SG2PV1252' multiple><option value='1252_9344'>10000Hz(2)<\/option><option value='1252_36088'>5000Hz(3)<\/option><option value='1252_33608'>6000Hz(1)<\/option><\/select><br \/><span onclick='clearsel(\"SG2PV1252\");' style='cursor:pointer; color:#F00;white-space:nowrap;'>重新选择<\/span><\/td><td><select name='PV' id='SG2PV1253' multiple><option value='1253_10044'>100Hz(3)<\/option><option value='1253_20951'>200Hz(1)<\/option><option value='1253_23586'>300Hz(1)<\/option><option value='1253_30786'>40Hz(1)<\/option><\/select><br \/><span onclick='clearsel(\"SG2PV1253\");' style='cursor:pointer; color:#F00;white-space:nowrap;'>重新选择<\/span><\/td><td><select name='PV' id='SG2PV1445' multiple><option value='1445_5511'>-(1)<\/option><option value='1445_17460'>100kohm(1)<\/option><option value='1445_1875'>150ohm(2)<\/option><option value='1445_15397'>200ohm(1)<\/option><option value='1445_30180'>400ohm(1)<\/option><\/select><br \/><span onclick='clearsel(\"SG2PV1445\");' style='cursor:pointer; color:#F00;white-space:nowrap;'>重新选择<\/span><\/td><td><select name='PV' id='SG2PV1794' multiple><option value='1794_5511'>-(6)<\/option><\/select><br \/><span onclick='clearsel(\"SG2PV1794\");' style='cursor:pointer; color:#F00;white-space:nowrap;'>重新选择<\/span><\/td><td><select name='PV' id='SG2PV1816' multiple><option value='1816_5511'>-(1)<\/option><\/select><br \/><span onclick='clearsel(\"SG2PV1816\");' style='cursor:pointer; color:#F00;white-space:nowrap;'>重新选择<\/span><\/td><\/tr><\/table><\/div>";
function clearsel(nameid)
{
var PV=document.getElementById(nameid);
	for(var i=0;i<PV.length;i++)
    {
    	if(PV[i].selected==true)
        	PV[i].selected=false;
    }
}